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Abigail Menchaca_1H
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Joined: Sat Sep 07, 2019 12:19 am


Postby Abigail Menchaca_1H » Sun Jan 19, 2020 11:36 pm

When is Q used and what's the difference between it and K?

Nohemi Garcia 1L
Posts: 103
Joined: Fri Aug 02, 2019 12:15 am

Re: Q

Postby Nohemi Garcia 1L » Sun Jan 19, 2020 11:42 pm

K and Q are really similar when it comes to solving for them (they use the same formulas). Q however, can be solved during any point of a reaction, while K is only solved for at equilibrium.

Petrina Kan 2I
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Joined: Fri Aug 30, 2019 12:17 am

Re: Q

Postby Petrina Kan 2I » Sun Jan 19, 2020 11:43 pm

Q is the ratio between products and reactants that is found when the reaction has not yet reached equilibrium. K is the ratio when the reaction is already at equilibrium. Therefore, we can use Q to see which way the reaction will proceed.

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Re: Q

Postby Chantel_2I » Sun Jan 19, 2020 11:44 pm

Q is used to determine whether the reaction is at equilibrium or not. The equation for Q is the same equation as the one for K. We compare Q to K to determine which way the reaction is shifted.

Tracy Tolentino_2E
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Re: Q

Postby Tracy Tolentino_2E » Sun Jan 19, 2020 11:44 pm

Q is the reaction quotient and is calculated at any time during a reaction. Q will change as time passes. Q and K are similar except that K is the value when the reaction is at equilibrium. If Q>K, the reverse reaction is favored, and if Q<K, the forward reaction is favored. IF Q=K, the both reverse and forward are occurring at the same rate.

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Re: Q

Postby Jared_Yuge » Sun Jan 19, 2020 11:45 pm

for example, when K>Q, then the reaction shifts to the right

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Re: Q

Postby SVajragiri_1C » Mon Jan 20, 2020 2:12 am

Q and K are solved in the same way, however, K is the equilibrium constant by definition, while Q is the reaction quotient which can be found at any point in the reaction timeline, and based on whether Q is less than, greater than, or equal to K predictions about the reactions future can be made.

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